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Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
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Compression and focusing a laser produced plasma using a plasma optical system.

C Pagano1, A A Goncharov, J G Lunney

  • 1School of Physics, Trinity College Dublin, Dublin, Ireland.

The Review of Scientific Instruments
|March 3, 2012
PubMed
Summary

Researchers focused laser-produced copper plasma using an electrostatic system for the first time. This plasma optical system achieved significant ion current density compression and increased on-axis deposition rates.

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Area of Science:

  • Plasma Physics
  • Materials Science
  • Optics

Background:

  • Laser-produced plasmas are utilized in various applications.
  • Controlling and focusing plasma flows is crucial for efficient material deposition.
  • Previous methods for plasma focusing have limitations.

Purpose of the Study:

  • To investigate the axi-symmetric compression and focusing of low-temperature laser-produced copper plasma.
  • To evaluate the effectiveness of an electrostatic plasma optical system for plasma manipulation.
  • To quantify the degree of plasma concentration and its impact on deposition.

Main Methods:

  • Utilized an electrostatic plasma optical system for plasma compression.
  • Employed Langmuir probe measurements to quantify ion flow and current density.
  • Conducted optical measurements of copper deposition thickness on glass substrates.

Main Results:

  • Demonstrated strong concentration of ion-plasma flow towards the central axis.
  • Achieved compression of ion current density by a factor of up to 9 at the focus.
  • Observed an increase in the on-axis deposition rate by approximately the same factor.

Conclusions:

  • The electrostatic plasma optical system effectively achieves axi-symmetric compression and focusing of laser-produced copper plasma.
  • Significant enhancement in on-axis deposition rates is achievable through plasma focusing.
  • This technique shows promise for advanced materials processing and applications requiring precise deposition.